Page 4 - TBAS-October-2020

-4- TBAS October 2020 ....................

Aquarium Size: The actual aquarium size is relatively unimportant. However,
the number of angelfish per gallon is critical. This figure varies depending on
several factors. Size has a lot to do with carrying capacity. Other variables that
affect this include, pH, temperature, feeding practices, water changing volume,
water changing frequency, strain of angelfish being kept and the overall quality of
angelfish you desire to raise or maintain. Keep in mind, the number of angelfish
per gallon a tank can handle, will vary immensely from one situation to another.
The following would be a very general guideline.
• Nickel size bodies 1 angelfish per gallon
• Quarter size bodies 1 angelfish per 2 gallons
• Silver dollar size bodies 1 angelfish per 3 gallons
• Stock ready to be paired 1 angelfish per 5 gallons
• Full grown breeding pair 20 gallon tall
Aquarium Filter: Good biological filtration can be easily obtained several
ways. Angelfish body shapes are not designed for efficient swimming, therefore
gentle aquarium filtration is preferred. Lots of water movement will stress them
somewhat and cause slower growth due to the increased energy expended to
swim against a current. Angels Plus Sponge filters are ideal for fish hatchery
situations, where expense is a concern. In show tanks, undergravel filters works
well. In a densely populated tank, a whole-tank filter is a very effective option. A
very effective secondary filter that will not clog is a fluidized bed filter. In general,
the limiting factor for angelfish carrying capacity is not biological filtration. It is dissolved
organics and high bacterial loads that develop from keeping too many fish in a
tank, overfeeding or changing too little water. Large, frequent water changes are
the easiest way to lower these dissolved organic and bacterial levels. Sophisticated
systems will sometimes incorporate the use of ozone, foam fractionation and U.V.
filters to accomplish the lowering of these organic and bacterial loads, but most
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